Volvo Repair: FUEL SYSTEM, flash flash flash, fuel pump relay


Question
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Followup To
Question - Checked the ignition coil, found there is no fire coming from it. Would this be a strong possibility to my woes?  


STARTED MY CAR (95 850 SEDAN) THE OTHER DAY, WENT AROUND THE CORNER AND IT SUDDENLY CUT OFF.  WHAT COULD IT BE. REPLACED THE FUEL FILTER, BUT THE BATTERY WAS THEN DEAD.  CAN YOU GIVE ME SOME IDEA OF WHAT IT COULD BE?  

THANKS IN ADVANCE

WILLIAM
Answer -
IT COULD BE ALMOST ANYTHING IN THE FUEL AND IGNITION SYSTEM.COMMON ITEMS WOULD BE FUEL PUMP,CAMSHAFT POSITION SENSOR,ENGINE SPEED SENSOR,FUEL PUMP RELAY.

Answer
I would check from diagnostic trouble codes below is how to do so.



behind the passengers side head light are 2 small black boxes,1 marked A ,and 1 marked B.on box A there is a small wire insert the wire into the hole marked 2 then turn the ignition key to position 2 but not started.then on the box marked A push the small button for 1 second then release it.the small red light will flash a code back as a 3 digit number.there is a short pause between flashes for a single digit and long pause between the different numbers.example:
a 121 would look like this flash.....flash..flash....flash
write down each code,then after the first code repeats its self then press the button for 5 seconds the light will light when pressing button then go out when released,then the light will light steady again when it does press button fo 5 seconds again,this should have reset the check engine light.let me know the codes. i will tell what they refer to.
         Rege